Grammostola actaeon (Brazilian Woolly Black) Tarantula

Grammostola actaeon, known as the Brazilian Redrump Tarantula, is a large, long-lived, and visually imposing terrestrial species from the subtropical grasslands and forest margins of southern Brazil and Uruguay. This impressive tarantula is characterized by its deep mahogany to black body with a rich reddish sheen across the abdomen, creating a subtle but powerful appearance. Unlike many flashy species, G. actaeon stands out for its size, calm temperament, and velvety coloration that deepens with age and each successive molt. In the wild, it inhabits firm, clay-based soils, digging burrows or occupying natural cavities beneath stones and roots to maintain stable humidity and temperature. It is slow-moving, deliberate, and generally docile, making it an ideal display or educational species. In captivity, G. actaeon thrives under semi-arid conditions with deep substrate, moderate humidity, and good ventilation, requiring minimal maintenance while offering exceptional visibility and longevity.

• Scientific Name: Grammostola actaeon

• Common Name: Brazilian Redrump Tarantula

• Adult Leg Span: 7–8 inches

• Country of Origin: Brazil, Uruguay

• Habitat: Subtropical Grassland and Forest Edge (200–800 m elevation); compact clay and loamy soils with seasonal rainfall, ambient temperatures 74–84°F, relative humidity 60–75%, with cooler dry winters and humid summers

• Habits: Terrestrial / Burrowing

• Growth Rate: Slow